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I have a Murray select riding lawn mower 2005 with the Briggs & Stratton engine and I ran over something and it would still start and run but when I engage the blades it made a terrible squealing noise and it was hard to start I took all of the wiring off and I’m trying to rewire it with only the wiring that I need but every wiring diagram that I can find for this model it is not right and it will turn over but it will not start can someone please help me

Hi, Here’s the parts manual for the model. The wiring diagram is on p.8 Check that the spark plug is OK. You can also purchase a spark plug tester (examples only to show cost) to see if there’s a spark at the plug or not. It is inserted in series with the spark plug lead i.e. remove the lead from the spark plug, insert one end of the tester into the lead and the other end onto the spark plug. It should show the voltage pulses being sent to the plug.